WASHINGTON — Sen. Jeff Flake's high school–aged son Tanner used Twitter to threaten the "faggot" who stole his bike that he "will find you, and … will beat the crap out of you," joked about an acquaintance stealing one-liners because he's Jewish, and went by the name "n1ggerkiller" in an online game.

"I'm very disappointed in my teenage son's words, and I sincerely apologize for the insensitivity. This language is unacceptable, anywhere. Needless to say, I've already spoken with him about this, he has apologized, and I apologize as well," Sen. Flake said in a statement to BuzzFeed.

[...]A source points out that Flake's YouTube comments are also littered with offensive language. A preliminary review of the hundreds of comments shows he repeatedly called other users "n--ger" and "faggot," called Mexicans the "scum of the Earth," and on several occasions bragged that his father is a member of Congress.